SOLUTION: if two angles are supplementray and one equals 4x and the other is 8x, what it x?

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Question 348393: if two angles are supplementray and one equals 4x and the other is 8x, what it x?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
By defintion,
A%2BB=180
4x%2B8x=180
12x=180
x=15
.
.
A=4x=60degrees
B=8x=120degrees